Method of processing non-real time service and broadcast receiver

• US 8,302,131 B2
• Filed: 12/09/2009
• Issued: 10/30/2012
• Est. Priority Date: 12/09/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Suh, Jong Yeul, Thomas, Gomer, Song, Jae Hyung, Kim, Jin Pil, Hong, Ho Taek, Lee, Joon Hui
• Primary Examiner(s): SALCE, JASON P
• Application Number:
  US12/654,078
• Publication Number:
  US 20100186058A1
• Time in Patent Office: 1,056 Days
• Field of Search: 725 48- 50, 725/54, 725 67- 68, 725 70- 71, 725/9, 725/17, 725/20, 725/25, 725/35, 725/93, 725/116, 725/146, 370/312, 370/432, 709/217, 709/227, 709/229, 348/731, 348/426.1, 348/384.1, 455/3.01
• US Class Current: 725/50
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/4586 Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally deployment, distribution, installation, update of software G06F8/65; error detection or correction of the data by redundancy during software upgrading G06F11/1433; arrangements for updating broadcast information or broadcast-related information H04H60/25
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/482 End-user interface for program selection broadcast systems using EPGs H04H60/72
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73

Abstract

A method of receiving and processing a Non-Real Time (NRT) service and a broadcast receiver are disclosed herein. A method of processing a Non-Real Time (NRT) service in a broadcast receiver includes receiving a first signaling information table including signaling information of the NRT service and a second signaling information table including announcement information of the NRT service, detecting a duplicate of the signaling information included in the first signaling information table and a duplicate of the announcement information included in the second signaling information table, acquiring the signaling information after processing the first signaling information table if the signaling information included in the first signaling information table is not a duplicate and acquiring the announcement information after processing the second signaling information table if the announcement information included in the second signaling information table is not a duplicate, and receiving and processing NRT service data based on the acquired signaling information and announcement information.

Claims

1. A method of processing a Non-Real Time (NRT) service in a broadcast receiver, the method comprising:

receiving a first signaling information table including first information of the NRT service and a second signaling information table including second information of the NRT service in a receiving unit;

detecting a duplicate of the first information included in the first signaling information table and a duplicate of the second information included in the second signaling information table in a service manager;

acquiring the first information after processing the first signaling information table if the first information included in the first signaling information table is not a duplicate and acquiring the second information after processing the second signaling information table if the second information included in the second signaling information table is not a duplicate in the service manager; and

receiving and processing NRT service data based on at least the acquired first or second information in a processor,

wherein the first information includes an Internet Protocol (IP) address and a User Datagram Protocol (UDP) port number of IP datagrams that form the NRT service,

wherein the second information includes information describing at least one content item in the NRT service, and

wherein IP datagrams including the first signaling information table and the second signaling information table have a well-known IP address and a well-known UDP port number.

2. The method of claim 1, wherein the duplicate of the first information included in the first signaling information table is detected using version information of the first signaling information table, and the duplicate of the second information included in the second signaling information table is detected using version information of the second signaling information table.

3. The method of claim 2, further comprising:

receiving a third signaling information table including the version information of the first signaling information table and the version information of the second signaling information table; and

determining if there is a change in the version information of the first signaling information table included in the third signaling information table then there is no duplicate in the received first information of the first signaling information table; and

determining if there is a change in the version information of the second signaling information table then there is no duplicate in the received second information of the second signaling information table.

4. The method of claim 3, wherein IP datagrams including the third signaling information table have a same IP address and a same UDP port number as the IP datagrams including the first and second signaling information tables.

5. The method of claim 3, wherein the first signaling information table is a Non-Real Time Service Map Table (NST), the second signaling information table is a Non-Real Time Information Table (NRT-IT), and the third signaling information table is a Non-Real Time Master Guide Table (NRT-MGT) of IP level or Master Guide Table (MGT) of Program and System Information Protocol (PSIP) level.

6. The method of claim 2, further comprising:

extracting the version information of the second signaling information table from the first signaling information table; and

determining that if the extracted version information of the second signaling information table has changed then the received second information of the second signaling information table is not a duplicate.

7. The method of claim 6, wherein the version information of the second signaling information table is included in service level descriptor of the first signaling information table.

8. The method of claim 2, further comprising:

receiving a fourth signaling information table providing an identifier of Transport Stream (TS) packets transmitting the IP datagrams of the first and second signaling information tables;

extracting the version information of the first signaling information table and the version information of the second signaling information tables from the fourth signaling information table; and

determining that if the extracted version information of the first signaling information table has been changed then the received first information of the first signaling information table is not a duplicate, and determining that if the extracted version information of the second signaling information table has been changed then the received second information of the second signaling information table is not a duplicate.

9. The method of claim 8, wherein the fourth signaling information table is a Program Map Table (PMT), and the version information of the first and second signaling information tables are included in elementary stream level descriptor of the PMT.

10. The method of claim 1, wherein if the first information of the first signaling information table is a duplicate then the received first signaling information table is dumped without being processed, and if the second information of the second signaling information table is a duplicate then the received second signaling information table is dumped without being processed.

11. A broadcast receiver for receiving a Non-Real Time (NRT) service, the broadcast receiver comprising:

a receiving unit for receiving a first signaling information table including first information of the NRT service and a second signaling information table including second information of the NRT service;

a service manager for detecting a duplicate of the first information included in the first signaling information table and a duplicate of the second information included in the second signaling information table, acquiring the first information after processing the first signaling information table if the first information included in the first signaling information table is not a duplicate, and acquiring the second information after processing the second signaling information table if the second information included in the second signaling information table is not a duplicate; and

a processor for receiving and processing NRT service data based on at least the acquired first or second information,

wherein the first information includes an Internet Protocol (IP) address and a User Datagram Protocol (UDP) port number of IP datagrams that form the NRT service,

wherein the second information includes information describing at least one content item in the NRT service, and

wherein IP datagrams including the first signaling information table and the second signaling information table have a well-known IP address and a well-known UDP port number.

12. The broadcast receiver of claim 11, wherein the duplicate of the first information included in the first signaling information table is detected using version information of the first signaling information table, and the duplicate of the second information included in the second signaling information table is detected using version information of the second signaling information table.

13. The broadcast receiver of claim 12, wherein the receiving unit receives a third signaling information table including the version information of the first signaling information table and the version information of the second signaling information table, determines if there is a change in the version information of the first signaling information table included in the third signaling information table then there is no duplicate in the received first information of the first signaling information table, and determines if there is a change in the version information of the second signaling information table then there is no duplicate in the received second information of the second signaling information table.

14. The broadcast receiver of claim 13, wherein IP datagrams including the third signaling information table have a same IP address and a same UDP port number as the IP datagrams including the first and second signaling information tables.

15. The broadcast receiver of claim 13, wherein the first signaling information table is a Non-Real Time Service Map Table (NST), the second signaling information table is a Non-Real Time Information Table (NRT-IT), and the third signaling information table is a Non-Real Time Master Guide Table (NRT-MGT) of IP level or Master Guide Table (MGT) of Program and System Information Protocol (PSIP) level.

16. The broadcast receiver of claim 12, wherein the service manager extracts the version information of the second signaling information table from the first signaling information table, and determines that if the extracted version information of the second signaling information table has changed then the received second information of the second signaling information table is not a duplicate.

17. The broadcast receiver of claim 16, wherein the version information of the second signaling information table is included in service level descriptor of the first signaling information table.

18. The broadcast receiver of claim 12, wherein the receiving unit receives a fourth signaling information table providing an identifier of Transport Stream (TS) packets transmitting the IP datagrams of the first and second signaling information tables, and wherein the receiving unit extracts the version information of the first signaling information table and the version information of the second signaling information tables from the fourth signaling information table, determines that if the extracted version information of the first signaling information table has been changed then the received first information of the first signaling information table is not a duplicate, and determines that if the extracted version information of the second signaling information table has been changed then the received second information of the second signaling information table is not a duplicate.

19. The broadcast receiver of claim 18, wherein the fourth signaling information table is a Program Map Table (PMT), and the version information of the first and second signaling information tables are included in elementary stream level descriptor of the PMT.

20. The broadcast receiver of claim 11, wherein if the first information of the first signaling information table is a duplicate then the received first signaling information table is dumped without being processed, and if the second information of the second signaling information table is a duplicate then the received second signaling information table is dumped without being processed.